Available to hire
I’m Nikola Karev, a System Administrator based in Sofia, Bulgaria with hands-on experience managing enterprise IT environments. I have deployed and maintained Windows Server environments, virtualization with vSphere, cloud resources in Azure, Active Directory, and asset/inventory documentation, while ensuring secure and efficient IT operations.
I enjoy collaborating with cross-functional teams, simplifying complex problems, and helping new employees onboard by provisioning hardware, software, and access. In my free time I explore drawing and design and sometimes create tattoos.
Skills
Experience Level
Language
English
Fluent
French
Intermediate
Russian
Intermediate
Chinese
Beginner
Work Experience
Night Receptionist & Shift Manager at South Point Suites (part of Marriott Bonvoy Hotels)
May 1, 2018 - July 24, 2025Managed night reception and shift duties at South Point Suites in London, increasing room occupancy by 1.5% in three months. Suggested dinner menu alternatives that boosted revenue per room by 3% month-over-month. Introduced KPIs for front-desk operations that improved positive online reviews by 2%.
Customer Support Supervisor at Firestorm
February 1, 2018 - July 24, 2025Supported and resolved approximately 50 tickets daily with an average first response time of 1 minute and resolution rate of 90%. Recognized as a top agent with a customer satisfaction score of 8.5/10. Provided ad-hoc IT technical assistance to develop further technical skills.
Help Desk Analyst at C3i Solutions
April 1, 2022 - July 24, 2025Diagnosed and resolved hardware, software, and network issues for around 2000 Windows and iOS users daily, supporting major clients like Brother, Microsoft, and Cisco. Administered user access across 7 systems, managed tickets using ServiceNow, and consistently achieved 90% on internal exams. Received positive feedback on 650-700 monthly tickets.
IT System Administrator at Tek Experts
May 1, 2023 - July 24, 2025Handled troubleshooting and resolution of hardware and software for desktops, laptops, printers, and other IT equipment. Assisted users with technical inquiries including password resets and software installation. Maintained documentation, promoted cybersecurity awareness, conducted training sessions, and collaborated closely with IT teams to ensure minimal disruption in daily operations.
IT System Administrator at Everest Marketing
October 1, 2023 - PresentAdministering and supporting Windows Server 2020 environments, managing Active Directory user accounts, group policies, and access controls. Overseeing virtualization with vSphere, managing Azure cloud resources, collaborating with team through JIRA and Slack, maintaining asset inventory with Ralph, and supporting remote operations via RDP. Handling onboarding of new employees, preparing hardware, installing software, and ensuring system access.
Night Receptionist & Shift Manager at South Point Suites (part of Marriott Bonvoy Hotels)
May 1, 2018 - July 24, 2025Managed night shift operations at South Point Suites, contributing to an increase in room occupancy rate by 1.5% within 3 months. Suggested menu alternatives that boosted revenue per room by 3% month-over-month. Implemented new KPIs for front-desk functions, leading to a 2% increase in positive online reviews.
Customer Support Supervisor at Firestorm
February 1, 2018 - July 24, 2025Supervised remote customer support handling approximately 50 tickets daily. Maintained an average first response time of 1 minute and achieved a 90% resolution rate. Consistently rated Top Agent with a customer satisfaction score of 8.5/10. Provided ad-hoc IT technical assistance, expanding skill set.
Help Desk Analyst at C3i Solutions
April 1, 2022 - July 24, 2025Provided diagnosis and resolution of hardware, software, and network issues for roughly 2000 Windows and iOS users daily. Administered user access across seven systems including for companies like Brother, Microsoft, and Cisco. Used ServiceNow, Veeva, LogMeInRescue, SecureID (RSA) to document and manage support tickets, receiving positive feedback consistently on 650-700 monthly tickets. Achieved 90% on internal learning development exams.
IT System Administrator at Tek Experts
May 1, 2023 - July 24, 2025Diagnosed and resolved hardware and software issues, assisted end-users with technical inquiries, and maintained accurate documentation of support requests and inventory. Promoted cybersecurity best practices and provided training to empower users. Collaborated with IT teams to escalate complex issues and participated in special projects to improve IT support services.
IT System Administrator at Everest Marketing
October 1, 2023 - PresentAdministered and supported Windows Server 2020 environments including system updates and configurations. Managed user accounts and group policies within Active Directory. Oversaw virtualization via vSphere and managed cloud resources using Azure. Used JIRA and Slack for team communication, maintained asset inventory and system documentation with Ralph, supported remote operations via RDP, and managed Nextcloud for data sharing. Played a key role in onboarding new employees with hardware and software setup.
IT System Administrator at Everest Marketing
October 1, 2023 - PresentExperienced System Administrator responsible for managing and maintaining enterprise IT systems. Daily duties include administering Windows Server 2020 environments with updates, configurations, and troubleshooting. Managing user accounts, group policies, and access controls in Active Directory to ensure secure operations. Overseeing virtualization using vSphere and cloud resource management and deployment with Azure. Facilitating team collaboration and communication using JIRA and Slack, optimizing workflows and incident resolution. Maintaining asset inventories and system documentation, supporting remote operations via RDP. Managing data sharing and collaboration platforms like Nextcloud, ensuring availability and security. Actively participating in onboarding new employees by preparing hardware, installing software, and ensuring system access and setup. Skilled in system monitoring, incident resolution, and delivering reliable IT services aligned with organizational goals.
IT System Administrator at Sofia Tek Experts
May 1, 2023 - August 20, 2025Diagnosed and resolved hardware and software issues including desktops, laptops, printers, and other IT equipment minimizing disruption to employees' work. Assisted end-users with password resets, software installations, and system configurations, emphasizing exceptional customer service. Maintained accurate records of support requests, resolutions, and equipment inventory to ensure streamlined and organized support processes. Collaborated with IT teams to escalate complex issues and provided clear instructions to end-users facilitating issue resolution. Stayed updated with latest technology trends and best practices to improve IT support quality and efficiency. Conducted training sessions and created documentation empowering end-users to troubleshoot common IT problems independently. Promoted cybersecurity best practices and ensured employees followed security protocols to protect organizational data and infrastructure. Worked with a diverse IT team to address challenges, share knowle
Help Desk Analyst at C3i Solutions
April 1, 2022 - August 20, 2025Provided hardware, software, and network problem diagnosis and resolution for approximately 2000 Windows and iOS customers daily, including admin support for companies like Brother, Microsoft, and Cisco. Administered and provided User Access across 7 systems. Achieved consistent 90% results on internal learning and development exams. Used ServiceNow, Veeva, LogMeIn Rescue, Secure ID (RSA), and other tools to document and manage problems, requests, and resolutions. Directed problems to internal support groups and continuously received positive feedback on handling 650-700 monthly tickets.
Customer Support Supervisor at Firestorm Remote Job
February 1, 2018 - August 20, 2025Supervised support including successful resolution of approximately 50 logged tickets daily with an average first response time of one minute. Achieved a 90% resolution rate and was rated Top Agent with a sustained customer satisfaction score of 8.5/10. Provided ad-hoc assistance with IT technical issues that enabled learning and skill development.
Night Receptionist & Shift Manager at London South Point Suites (part of Marriott Bonvoy Hotels)
May 1, 2018 - August 20, 2025Managed night reception and shift duties, achieving a 1.5% increase in room occupancy rate within 3 months. Suggested alternatives to the dinner menu, increasing revenue per room by 3% month-over-month. Introduced new KPIs to the front-desk function which increased positive online reviews by 2%.
Night Receptionist & Shift Manager at London South Point Suites (part of Marriott Bonvoy Hotels)
May 20, 2017 - May 20, 2018Managed nightly front-desk operations, including guest check-ins, shift coordination and occupancy; key achievements include a 1.5% increase in occupancy over 3 months, proposed dinner menu adjustments that boosted revenue per room by 3% MoM, and introduced front-desk KPIs that increased positive online reviews by 2%.
Customer Support Supervisor at Firestorm (Remote)
March 20, 2017 - February 20, 2018Managed and resolved ~50 tickets daily; achieved an average first response time of 1 minute; 90% resolution rate; Top Agent with a sustained customer satisfaction score of 8.5/10; provided ad-hoc IT assistance to learn and develop.
Help Desk Analyst at C3i Solutions
March 20, 2021 - April 20, 2022Provided hardware/software/network problem diagnosis/resolution for ~2000 Windows and iOS customers daily; admin support for companies like Brother, Microsoft, and Cisco; administered user access across 7 systems; achieved 90% on internal exams; documented problems and resolutions using ServiceNow, Veeva, LogMeIn Rescue, RSA; directed problems to internal support groups; continuous positive feedback on 650–700 monthly tickets.
IT System Administrator at Sofia Tek Experts
October 20, 2022 - May 20, 2023Hands-on IT System Administrator managing and maintaining enterprise IT systems; administer Windows Server 2010 environments, system updates, configurations and troubleshooting; manage user accounts, group policies, and AD access controls; oversee virtualization via vSphere for optimal resource allocation and server performance; Azure cloud resource management, monitoring, and deployment; onboarding new employees; asset inventory and system documentation; incident resolution; remote operations via RDP.
IT System Administrator at Sofia Everest Marketing
October 1, 2023 - PresentExperienced System Administrator managing enterprise IT systems; administer Windows Server 2020 environments, system updates, configurations, and troubleshooting; manage AD, group policies, and access controls; oversee virtualization via vSphere; Azure cloud resource management; onboarding new employees with hardware distribution and software installation; ensuring smooth system access and setup; proficient in system monitoring, incident resolution, and delivering reliable IT services.
Education
Bachelor's degree at Sofia University
January 1, 2019 - December 31, 2022High School Diploma at FLS "Romain Rolland" High School
January 11, 2030 - July 24, 2025Bachelor's Degree at Sofia University
January 1, 2019 - December 31, 2022Bachelor's degree at Sofia University
January 1, 2019 - January 1, 2022High School Diploma at "Romain Rolland" High School
January 11, 2030 - August 20, 2025Bachelor's degree in Chinese Sinology at Sofia University
January 1, 2019 - January 1, 2022High School Diploma at Romain Rolland High School
January 11, 2030 - January 8, 2026Qualifications
Industry Experience
Computers & Electronics, Professional Services, Travel & Hospitality, Software & Internet, Education
Skills
Experience Level
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